Ingot-charging crane.



PATENTBD JAN.'3,'1905.

C. L. TAYLOR.

INGOT GHARGING CRANE.

APPLICATION FILED JAN. 28, 1904.

3 SHEETS-SHEET 1 A Homey No. 778.917. 'PATENTBD JAN. 3, 1905.

' G. L. TAYLOR. A

INGOT GHARGING CRANE. APPLICATION FILED IAN. 23.1904.

a SHEETS-SHEET a.

WTNEISSES. INVENTOR UNITED STATES CLARENCE L. TAYLOR, OF ALLIANCE, OHIO, ASSIGNOR TO THE MORGAN Patented January 3, 1905.

PATENT OFFICE.

ENGINEERING COMPANY, OF ALLIANCE, OHIO.

lNGOT-CHARGING CRANE.

SPECIFICATION forming part of Letters Patent No 778,917, dated January 3, 1905.

i Application filed January Z8, 1904. Serial No. 191,048,

To all whom, t may concern:

Be it known thatI, CLARENCEL. TAYLOR, of Alliance, in the county of Stark and State of Ohio, have invented certain new and useful Improvements in Ingot-Charging Cranes; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My inventionrelates to an improvement in ingotcharging cranes; and it consists,

Y broadly, in a bar carrying a pair of racks and ingot-grasping tongs actuated by a vertical movement of the racks independently of the vertical movement of the bar.

My invention further consists in the parts and combinations oi' parts, as will be more fully explained, and pointed out in the claims.

In the accompanying drawings, Figure 1 is a view in elevation oi' my improvement mounted on a trolley carried by a traveling bridge,

the lower end of the bar and the tongs-supports being shown in section. Fig. 2 is a view in longitudinal section of the bar, showing the movable racks. Fig. 3 is a view in transverse section on the line c c of Fig. 2. Fig. 4 is a View in horizontal section, taken through the axes of the ingot-tongs.` Fig. 5 is a view in vertical section on the line c c of Fig. 2; and Fig. 6 is a horizontal section on the line I) o of Fig. 2, the tongs being removed.

l represents the traveling bridge,'and Qthe trolley. While this trolley may be of any approved form, it is desirable that the upper part of the trolley be mounted to rotate so that the grasping-tongs may be turned to proper position to engage the ingot and that the trolley be provided with two pinions, the latter being so geared that they can impart a simultaneous lifting or lowering action on the racks, and thus raise or lower thebar and all parts carried thereby, or can impart reverse movements to the racks Jfor opening and closing the tongs, as will be hereinafter more fully described. A trolley embodying such features is disclosed in the Morgan and Taylor Patent No. 655,367. granted August 7 1900, except that in the latter pulleys (if and 71,14) are shown instead of pinions.

Hence I make no claim herein to the trolley, but claim, broadly, the bar and its accessories without regard to the particular construction of trolley with which -it is used.

3 represents the bar of any approved form in cross-section. This bar projects up through the trolley and is guided and sustained against lateral deflection by suitable projections from the trolley in the well-known manner common to rack-cranes.

Located in dovetail slots or seats 6 in opposite sides of the bar 3 are the racks 4 and 5. These racks are mounted to slide vertically on the bar 3, and the exposed teeth thereof are adapted to be engaged by the teeth ot' two pinions 7, carried by trolley 2 and shownl diagrammatically in Fig. 2. These pinions, as before explained, are designed to be rotated simultaneously in a direction to raise and lower the racks, and consequently the bar 3, or rotated in direction to raise one rack and lower the other. The lower section 8 of the bar 3 is enlarged and is provided with slots 9 for the passage of the lower ends of the rack-bars, the latter being provided with shoulders l0, which engage corresponding shoulders 1l on the section 8 of the bar 3 and limit the vertical movements of said rack-bars. The rack-bars are each provided at their lower ends on their inner faces with teeth 12, which mesh with pinion 13, located adjacent to the upper end of section 8 of the bar. With the two racks thus connected by an intermediate engaging pinion it will be seen that when engaged by pinions 7 rotating at equal speeds in a direction to raise or lower the barthe bar and all parts carried thereby will be raised and lowered without any independent movement of either, or, in other words, the parts will be locked by pinion 13, so that they move in unison. When, however, the pinions 7 are rotated to move one rack-bar up and the other down, the bar 3 would simply remain in suspension without any vertical movement.

The lower end. of section 8 oi' the bar 3 is enlarged laterally, as shown in Fig. 2, and is provided on opposite sides with the downwardly-diverging seats or sockets which receive the upper ends of the ingot-grasping arms 15, the said upper ends of the arms 15 being provided with shoes 16, which latter rest and slide on the inclined faces 17 of the seats or sockets.

Passing centrally through the lower end of section 8 of the bar 3 is the hollow post 18. This post 18 is supported on cross-head 19, which latter is supported at its ends by rods 19h, as shown in Fig.- 3. This cross-head passes through post 18, and the supportingrods 19h pass upwardly through guides 2O in the bar 3 and carry at their upper ends a cross-head 19, which latter rests on an inwardly-projecting tongue 2Oa on rack-bar 5. This tongue 20 passes through a slot in bar 3 and supports cross-head 19a and the parts carried thereby. Hence it will be seen that this cross-head and the parts suspended therefrom only move vertically independently of bar 3 when the racks 4 and 5 are moved in opposite directions. Integral with the lower end of post 18 are the knuckles 21, to which the ingot-grasping arms 15 are pivoted.

In Fig. 2 the parts are shown in their normal position with the ingot-grasping arms open, and in the operation of the device the bar3 would be lowered by the rotation of the pinions 7 in unison until the base of post 18 was immediately over and adjacent to the upper end of ingot, but not necessarily in contact therewith. By now rotating pinions 7 so as to cause rack-bar 4 to ascend and rackbar 5 to descend cross-head 19 will be released, thus permitting' it and the post 18 and tongs carried by the post to descend. During this descent of the post the shoes 16, carried by the upper ends of the ingot-tongs moving on the diverging inclines 17, cause the free ends of the tongs to approach each other and grasp the ingot. If during the det scent of the post the base of thelatter should engage the ingot before the engagement of the ingot by the tongs, it (the post) would simply rest on the ingot throughout the completion of the down ward stroke of rack 5 without exerting any pressure other than its weight, and consequently without straining post 3 or any of the parts on `the trolley. After the rack 5 has been moved down to its lowest position and rack 4 raised to its highest position the apparatus is then in readiness to raise the ingot. If the ingot has been grasped by the tongs 15 before the engagement of the post with the ingot, the instant the racks 4 and 5 and post 3 are raised by pinions 7 the ingot will also be raised. If, however, the

. post engaged the ingot before the tongs had grasped the ingot, the bar and its connected rack will'rise, leaving the post seated on the ingot until the upward movement of the bar 3 has closed the tongs on the ingot, when the latter will begin to rise. To release the ingot from the tongs, it is simply necessary to lower rack 4 and raise rack 5. This upward movement of rack 5 causes tongue 20 to engage cross-head 19a and lift the post to the position shown in Fig. 2.

It is evident that many slight changes might be resorted to in the relative arrangement of parts herein shown and described without departing from the spirit and scope of my invention. Hence I would have it understood that I do not wish to restrict myself to the eXact onstruction of parts shown and described;

Having fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In ingot-charging apparatus, the combination with a bar and two movable racks carried thereby, of ingot-grasping tongs, and

'means actuated by said racks for opening and' closing the tongs.

2. In ingot-charging apparatus the combination with a bar, and vertically-sliding connected racks mounted on said bar, of ingotgrasping tongs and means actuated by said racks for opening and closing the tongs.

3. In ingot-charging apparatus, the combination with a bar having inclines, a sliding post carried by said bar and tongs carried by said sliding post and engaging the inclines, of two oppositely-moving connected racks carried by said bar and means connecting one rack and the post whereby the simultaneous movements of the racks in opposite directions raise or lower the post.

4. In ingot-charging apparatus, the combination with a bar, two sliding racks carried by the bar and a pinion connecting the two racks whereby they are caused to move in opposite direction, of ingot-graspingl tongs and means actuated by the reverse movements of the racks for opening and closing the tongs..

5. In ingot-charging apparatus, the combination with a bar having inclined surfaces at its lower end, and a post carried by said bar and carrying tongs the upper ends of which engage said inclined surfaces on the bar, of two racks slidingly mounted in the bar, a pinion connecting said racks and means connecting the post and one of the rack-bars.

6. In an ingot-charging apparatus, the combination with a bar having' inclined surfaces at its lower end, a post loosely mounted at the lower end of the bar and ingot-tongs pivoted to the post and engaging the inclined surfaces of the bar, of racks slidingly mounted on the bar, a pinion carried by thev bar and meshing with inwardly-projecting teeth on the two racks, and means connecting one of the racks and the post, substantially as set forth.

In testimony whereof I have signed this specification in the presence of twosubscribing witnesses.

CLARENCE L. TAYLOR.

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